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In a certain A.P., 5 times the 5th term ...

In a certain A.P., 5 times the 5th term is equal to 8 times the 8th terms then find its 13th term.

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CENGAGE PUBLICATION-SEQUENCES AND SERIES-All Questions
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  3. In a certain A.P., 5 times the 5th term is equal to 8 times the 8th ...

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  5. How many terms are there in the A.P. 3, 7, 11, ... 407?

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  10. In an A.P. of 99 terms, the sum of all the odd-numbered terms is 2550....

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